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3 Sheets-Sheet 1.

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J.' J. e E. T. EAULKNBR. MACHINE PORTEEATING MIDDLINGS.

Patented Febi 12, 1884. y

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JAMES JONES EAULKNEE ANDELZAV TAYLOR FALKNEB, OF MGMINN- VILLE, TENNESSEE.

MACHlNE'FOR TREATING MIDDLINGS.

SPECIFICATION forming part Of Letters Patent 293,236, dated February 12, 1.884. i Application filed May 1E, 1883. (No model.) i i verse vertical section through x .fr of Fig. l.

Fig. 4 is a longitudinal vertical section.

Our invention relates to machines for bolting flour and purifying middlings; and it consists of the several combinations of devices, hereinafter explained and claimed.

To enable others skilled in the art to make 4 and use our invention, we will proceed to describe the exact. manner in which we have carried it out.

In the drawings, A represents the frame. work of a liour-bolting chest with the'outer casing removed, so as to" show the interior structure. Through the center of the boltingchest runs longitudinally the supporting-bar B, on which rests, and to which is secured, the sieve or bolting-cloth G. Two parallelmplates or bars, b b, hold the outer-edges of the sieve, and the cross-bars b b', passing at right angles over the center bar, B, and attached to the parallel bars b b, support the body of the sieve. At one edge of the bolting-cloth or sieve is fastened a strip of rubber cloth or other elastic material, D, by sewing or otherwise, for the purpose of keeping the cloth G always tightly stretched, -equally in dry and wet weather. The sieve is transversely inclined at any desired angle toward theelevator-box E, but is on a level longitudinally. The central or supporting bar, B, extends beyond each end of the frame, for a purpose hereinafter explained, and has its bearings in cross-beams F F. Across one end of the machine is the shaft G, having its bearings in the arms g g, extending out from the frame A. To one end -frame below the shaft G.

0f this Shaft is attached the band-wheel G',

' and near its center is secured the eccentric g',

bearing against an adjustable knocker, H, which is attached to thel rocker-shaft H', having its bearings in the eyes h h, attached to the rlhe knocker H has a set-screw, h', by which it may be adjusted to bearmore or less against the eccentric g', and' give the sievea longitudinal vibrating motion by knocking against the exposed end of the supporting-bar B. On the opposite end. of our machine we attach a double-wire spiral spring, I, which is wound both right and left around and toward the Ycenter of the shaft t',

to form a'lever to bear against the exposed end of the middle orsupporting bar, B, of the with a central loop, t', in the center of the wire,

sieve, to counteract or reciprocate the vibraty ing motion of the eccentric and knocker at the opposite end of the sieve. The shaft t', on which the wire spring is formed, has bearings with Set-screw d, (see Fig. 1,) the purpose of which is to tighten the shaft firmly in its bearings. Now, by turning this shaft, after releasing it from the set-screw d, the spring can be strengthened or'weakened, according to the waythe shaft may be turned, and the shaft can then be again firmly fixed at-any degree of inclination that may be desired by again tightening the set-screw d, the wire spring being rigidly attached to the shaft. Longitudinally through the upper part of the machine passes a shaft, J, on the outer ends of which are the band-wheels j j, by which motion is given to the shaft and through the shaft to the augertwist conveyers in the bottom of the machine; On the shaft J we secure two or more sprocketwheels, K, 'carrying Suitable belts, k, to which are attached the long elevator-buckets L.

Within the elevator-box E is a shaft, M, carrying alike number of sprocket-wheels, around which passes the belt k, and by means of which the elevator-buckets are causedto pass through ing toward the tail end of the purifier and dropping over the end of the sieve into the discharge-spout N for impurities. The sieve C4 having a lateral inclination instead of a longitudinal one, the middlings or flour placed thereon to be cleaned of iiuff, bran, or foreign substances glidesnfreely on the incline by its own gravitation. The middlings or our, being of greater speciiic gravity than the bran or iluff, occupies a position next the seive while passing over the cloth, at the same time forcing the iiuff and bran to move on top, as if floating on Water. The middlings and iiour,

`in the meantime passing through thesie've,

Such

are thus separated from all impurities. part of the middling's and flour as may fail to pass through the seive will fall from the lower edge into the long elevator-box, whence it Will be again returned to the top edge of the sieve, to be Worked over. Before reaching the top edge of the sieve, it falls from the elevator-buckets onto the interposed Wicket-board l?, which distributes the middlings or ilour evenly upon the sieve. This Wicket-board is pivoted at each end of the machine, so that it may receive any desired lateral incline necessary to cause an even iloW of the material on the face of the sieve at its upper side.

XVe have ascertained by actual experiments that by the Working of the bran in with the middlings we secure an excellent collection of the fluff. The bran acts upon and attracts the fluff, which We are enabled to' collect perfectly Without the use of a fan, which is employed in all puriers.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is

1. In amiddlingspurifer, the sieve C, having a lateral incline, and provided With the' shaker, the rocker-shaft H', set-screw h, andeccentric y', all constructed to operate substantially as and for the purpose set forth.

JAMES JONES .FAULKNER ELZA TAYLOR FAULKNER.

Vitnesses:

M. M. PHnLrs, C. T. THURMAN. 

